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Title | About wear resistance of linear block-polyurethanes |
Authors |
Anisimov, V.M.
Anisimov, V.V. Panda, A. Pandova, I. Diadiura, Kostiantyn Oleksandrovych ![]() |
ORCID |
http://orcid.org/0000-0002-7575-9711 |
Keywords |
linear block-polyurethane wear resistance coefficient of friction hardness molecular weight content of rigid blocks counterbody roughness thermal diffusion surface saturation |
Type | Article |
Date of Issue | 2020 |
URI | https://essuir.sumdu.edu.ua/handle/123456789/82860 |
Publisher | MM Publishing |
License | Creative Commons Attribution 4.0 International License |
Citation | About wear resistance of linear block-polyurethanes. MM Science Journal. 2020. November. |
Abstract |
Linear block-polyurethanes (BPU) are finding more and more
practical applications in industry, and their recipe range is
rapidly expanding. It is shown that the evaluation of the
tribotechnical characteristics of BPU depending on hardness, as
suggested by ISO 16365-1:2014 P1, is inaccurate and requires
further research to establish the relationship between structure
and properties of polyurethanes, taking into account their
chemical structure and the type of initiaal components. The
dependences of the tribotechnical characteristics of linear
block-polyurethanes under friction with steel without external
lubrication and in the liquid on the parameters of structural
organization of the polymer were studied: at the molecular
level (oligooethers, oligoesters), at the topological level (change
in the molecular weight of oligomers from 500 to 2000), at
supramolecular level (influence of crystallinity), at the
morphological level (content of hard phase). The change in the
roughness of steel counterbody during friction of
polyurethanes with the content of hard blocks 20%, 50%, and
70% was also studied. A method is proposed for increasing the
wear resistance of polyurethanes by thermal diffusion
saturation of the surface with silicon carbide particles. |
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File | Size | Format | Downloads |
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mmscience_2020-11_about-wear-resistance-of-linear-block-polyurethanes.pdf | 1.12 MB | Adobe PDF | 1134933850 |
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